Area Forecast Discussion
Issued by NWS Charleston, SC

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FXUS62 KCHS 190516
AFDCHS

Area Forecast Discussion
National Weather Service Charleston SC
1216 AM EST Fri Jan 19 2018

.SYNOPSIS...
Cold, dry high pressure will build over the region tonight
before moderating temperatures occur this weekend into early
next week. A cold front will push through the area late Monday
into early Tuesday followed by dry high pressure through at
least Tuesday night.

&&

.NEAR TERM /UNTIL 6 AM THIS MORNING/...
No major changes were made for the early morning update.

&&

.SHORT TERM /6 AM THIS MORNING THROUGH SUNDAY/...
Dry high pressure will prevail through the period. An upper
disturbance will likely move through Saturday night into Sunday
but this will just lead to some mid/high clouds. Temperatures
will moderate through the weekend, reaching above normal levels
starting Saturday.

&&

.LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
High pressure will prevail over the Southeast United States
into early next week before a cold front arrives late Monday
into early Tuesday. Ahead of the front, southerly winds will
help advect deep moisture characterized by PWATs around 1.3
inches to the Southeast and result in some cloud cover. This
could limit overall heating potential a few degrees, but temps
are still expected to peak in the upper 60s/lower 70s Monday
afternoon. Chances of showers should then spread over inland
areas Monday afternoon/evening before advancing to the coast
with the cold front Monday night. Dry high pressure will then
return behind the departing front on Tuesday and persist into
the middle of next week. Temps will be slightly cooler behind
the front, but should remain a few degrees above normal. In
general, afternoon temps should peak in the lower 60s away from
the immediate coast. Overnight lows should dip to around 40
degrees inland and mid 40s closer to the coast. The next best
chance of precip is possible on Thursday as a low pressure
system passes south of region.

&&

.AVIATION /05Z FRIDAY THROUGH TUESDAY/...
Primary concerns:
* None.

VFR.

Extended Aviation Outlook: No concerns until late Sunday night
when moisture increases the risk for low clouds/fog and then low
clouds/showers Monday.

&&

.MARINE...
Tonight: Quiet marine conditions are expected overnight as high
pressure continues to build into the region, and the pressure
gradient relaxes. Northwest winds this evening will back to the
west overnight, with speeds 15 knots or less. Seas will be 2 to
4 feet.

Friday through Tuesday: No significant concerns although
conditions will deteriorate somewhat Monday/Tuesday as a cold
front affects the area.

&&

.EQUIPMENT...
The KCLX radar is out of service until further notice. Repairs
are ongoing. Adjacent radars include: KLTX, KCAE, KJGX, KVAX and
KJAX.

The Downtown Charleston observation site (CHLS1/KCXM) remains
out of service until further notice.

&&

.CHS WATCHES/WARNINGS/ADVISORIES...
GA...None.
SC...None.
MARINE...None.

&&

$$


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